mk-query-digest uses less memory

Daniel changed mk-query-digest to use much less memory. It parsed and aggregated a 2GB MySQL slow query log file in a few dozen megabytes of memory for me yesterday. Thanks to Facebook for sponsoring this work.

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I'm Baron Schwartz, the founder and CEO of VividCortex. I am the author of High Performance MySQL and lots of open-source software for performance analysis, monitoring, and system administration. I contribute to various database communities such as Oracle, PostgreSQL, Redis and MongoDB. More about me.